The Baganda people in Uganda are well known for their long and complicated
greetings.  During a visit to Kampala I learned the correct morning greeting
(that used tones) so I could surprise a Ugandan friend of mine, Sister
Alexandrina of the Little Sisters of St. Francis.   On the day that we were
going to meet, I carefully memorized and practiced many times the morning
greeting realizing that it is different from the afternoon greeting.  Well,
Alexandrina was delayed and suddenly arrived at 3 p.m.  She greeted me warmly in
English.  I was speechless.  A bit flustered, I could only blurt out:  "I wish
you had come in the morning so I could have used my Luganda greeting."